Click on the rectangles below to be taken to the index maps. Each index map shows University of Chicago holdings for the 1:253,440 (quarter-inch), 1:126:720 (half-inch), and 1:63,360 (one-inch) series with red circles. Holdings of 1:25,000 sheets (of which there are only a few) are shown with dark green circles inside a dark green grid. German World-War-II-era 1:200,000 series holdings are shown with light green circles.
